Differences between revisions 3 and 5 (spanning 2 versions)

MIR Meeting on 2022/11/16 15:00 - 16:00

Participants: Matteo, Aso, Marc, HYamamoto, KYamamoto, June Gyu, Sungho, Somiya, Tomaru

2022 Dec 14, 15:00 - 16:00

Minutes

Q measurement of fundamental drum mode of ETMX done on Nov 3rd
- 2.1 x 10^5 which is 1-2 order of magnitude smaller than expected
- Q value could be limited by suspension dissipation
- even if lower than expected should not impact on the system thermal noise
Update from ARD: activity proceeding faster than expected, a small chip on barrel was discovered and will be investigated
Report from KASI:
- small sample delivery expected in few days
- zygo interferometer tests ongoing, problem with polarization
introduction of new characterization techniques for birefringence measurement by Marc (will be presented at FWG meeting on Nov 17th)

KAGRA/Subgroups/MIR/Meetings/Minutes20221116 (last edited 2022-11-16 15:45:51 by matteo.leonardi)

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+. Q measurement of fundamental drum mode of ETMX done on Nov 3rd
  * 2.1 x 10^5 which is 1-2 order of magnitude smaller than expected
  * Q value could be limited by suspension dissipation
  * even if lower than expected should not impact on the system thermal noise
 1. Update from ARD: activity proceeding faster than expected, a small chip on barrel was discovered and will be investigated 
 1. Report from KASI: 
  * small sample delivery expected in few days
  * zygo interferometer tests ongoing, problem with polarization
 1. introduction of new characterization techniques for birefringence measurement by Marc (will be presented at FWG meeting on Nov 17th)